Romanian Journal of Information Science and Technology (ROMJIST)

An open – access publication

  |  HOME  |   GENERAL INFORMATION  |   ROMJIST ON-LINE  |  KEY INFORMATION FOR AUTHORS  |   COMMITTEES  |  

ROMJIST is a publication of Romanian Academy,
Section for Information Science and Technology

Editor – in – Chief:

Academician Dan Dascalu

Secretariate (office):
Adriana Apostol
Adress for correspondence: romjist@nano-link.net (after 1st of January, 2019)

Editing of the printed version: Mihaela Marian (Publishing House of the Romanian Academy, Bucharest)

Technical editor
of the on-line version:
Lucian Milea (University POLITEHNICA of Bucharest)

Sponsors:
• National Institute for R & D
in Microtechnologies
(IMT Bucharest), www.imt.ro
• Association for Generic
and Industrial Technologies (ASTEGI), www.astegi.ro

ROMJIST Volume 24, No. 2, 2021, pp. 129-142, Paper no. 684/2021
 

Florin Silviu DUMITRU, Carmen Raluca ILIE, Mircea BODEA, Marius ENACHESCU
Exploring the Effect of Segmentation on a 10-bit DAC

ABSTRACT: This paper investigates the impact of segmentation on the DNL (differential non-linearity) and INL (integral non-linearity) of a 10-bit differential output current-steering digital-to-analog converter (DAC), implemented in a 40 nm, 2.5 V, CMOS process. The achievable DNL improvement was characterized by simulating all intermediate degrees of segmentation possible between a binary and a thermometer implementation. The DNL results ranged between (-0.467, +0.474) LSB and (-0.024, +0.026) LSB with the INL remaining almost invariant at (-0.376, +0.345) LSB. A differential output current of +/-1mA was achieved for a circuit with an active analog area of 0.01 mm2 . All decoder variants required for driving the analog content of the DAC have been physically implemented with their area documented. The theoretical results for the DNL and INL are compared with the Monte Carlo simulation results and are shown to be within a 30% margin of error.

KEYWORDS: Microelectronics, nanotechnology, DAC, current-steering, segmentation, RMS, decoder

Read full text (pdf)






  |  HOME  |   GENERAL INFORMATION  |   ROMJIST ON-LINE  |  KEY INFORMATION FOR AUTHORS  |   COMMITTEES  |